Construction block



FIG. 1 is a perspective view of the construction block showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 3; and

FIG. 7 is a sectional view taken along the line 7--7 of FIG. 2. 

The ornamental design for a construction block, as shown. 